# -*- encoding:utf-8 -*-


# 我会推荐你总是使用括号
# 来指明元组的开始与结束
# 尽管括号是一个可选选项。
# 明了胜过晦涩，显式优于隐式。
zoo = ('python', 'elephant', 'penguin')
print('Number of animals in the zoo is', len(zoo))
new_zoo = 'monkey', 'camel', zoo
print('Number of cages in the new zoo is', len(new_zoo))
print('All animals in new zoo are', new_zoo)
print('Animals brought from old zoo are', new_zoo[2])
print('Last animal brought from old zoo is', new_zoo[2][2])
print('Number of animals in the new zoo is', len(new_zoo) - 1 + len(new_zoo[2]))
